I01
⚠ Non-billable
Rheumatic fever with heart involvement
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I01
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code I01?
ICD-10-CM code I01 represents Rheumatic fever with heart involvement. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I01 billable?
No. I01 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is I01 in?
I01 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
Related codes in the I01 category
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